| Records |
| Author |
Kirkwood, J.K. |
| Title |
Animal minds and animal welfare |
Type |
Journal Article |
| Year |
2000 |
Publication |
The Veterinary Record |
Abbreviated Journal |
Vet. Rec. |
| Volume |
146 |
Issue |
11 |
Pages |
327 |
| Keywords |
*Animal Welfare; Animals; Animals, Domestic/*psychology; *Cognition; Consciousness; Veterinary Medicine/standards |
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English |
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| ISSN |
0042-4900 |
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| Notes |
PMID:10766123 |
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| Call Number |
Equine Behaviour @ team @ |
Serial |
2856 |
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| Author |
Pereira, M.E.; Schill, J.L.; Charles, E.P. |
| Title |
Reconciliation in captive Guyanese squirrel monkeys (Saimiri sciureus) |
Type |
Journal Article |
| Year |
2000 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
50 |
Issue |
2 |
Pages |
159-167 |
| Keywords |
Aggression; Agonistic Behavior; Animals; Conflict (Psychology); Female; Guyana; Male; Saimiri/*psychology; *Social Behavior; Social Dominance |
| Abstract |
The tendency for agonistic interaction to increase the probability of friendly interaction between social partners has been demonstrated across a range of Old World primates. While research on such post-conflict behavior proceeds into an hypothesis-testing phase, new comparative information must accumulate to provide full phylogenetic perspective on primate social behavior. Data from New World and prosimian primates are yet extremely limited. We studied captive squirrel monkeys (Saimiri sciureus) via post-conflict (PC) and matched control (MC) observations and analyzed results using both the PC-MC and time-rule methods. Former opponents maintaining affiliative relationships soon engaged in friendly interaction following large proportions of agonistic interactions, whereas non-affiliated individuals, including virtually all male-female pairs, reconciled conflicts rarely. Close-proximity approaching and huddling contact constituted the principal modes of post-conflict amicability. Agonistic interactions of relatively high intensity were most likely to be reconciled and most likely to be reconciled via physical contact. High vulnerability of Saimiri to predation may have favored this species' strong inclination to reconcile soon after agonistic interaction. Research on free-living populations of this and other primate species is needed to illuminate similarities and differences across taxa. |
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Department of Biology and Program in Animal Behavior, Bucknell University, Lewisburg, Pennsylvania 17837, USA. mpereira@bucknell.edu |
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English |
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0275-2565 |
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PMID:10676712 |
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no |
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refbase @ user @ |
Serial |
2878 |
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| Author |
Hohmann, G.; Fruth, B. |
| Title |
Use and function of genital contacts among female bonobos |
Type |
Journal Article |
| Year |
2000 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
60 |
Issue |
1 |
Pages |
107-120 |
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| Abstract |
Female bonobos, Pan paniscus, show a mounting behaviour that differs physically from that in other primate species. They embrace each other ventroventrally and rub their genital swellings against each other. We investigated five hypotheses on the function of ventroventral mounting (genital contacts) that derive from previous studies of both primate and nonprimate species: (1) reconciliation; (2) mate attraction; (3) tension regulation; (4) expression of social status; and (5) social bonding. We collected data in six field seasons (1993-1998) from members of a habituated, unprovisioned community of wild bonobos at Lomako, Democratic Republic of Congo. No single hypothesis could account for the use of genital contacts, which appeared to be multifunctional. We found support for hypotheses 1 and 3. Rates of postconflict genital contacts exceeded preconflict rates suggesting that the display is used in the context of reconciliation. Rates of genital contacts were high when food could be monopolized and tension was high. However, genital contacts also occurred independently of agonistic encounters. Our study shows rank-related asymmetries in initiation and performance of genital contacts supporting the social status hypothesis: low-ranking females solicited genital contacts more often than high-ranking females while the latter were more often mounter than mountee. Although subordinates took more initiative to achieve genital contact, dominants mostly responded to the solicitation (ventral presentation) with mounting, indicating that the performance benefits both individuals. We suggest that genital contacts can be used to investigate both quality and dynamics of dyadic social relationships among female bonobos. Copyright 2000 The Association for the Study of Animal Behaviour. |
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Max Planck Institute of Evolutionary Anthropology, Leipzig |
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0003-3472 |
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| Notes |
PMID:10924210 |
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no |
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refbase @ user @ |
Serial |
2879 |
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| Author |
Lanier, J.L.; Grandin, T.; Green, R.D.; Avery, D.; McGee, K. |
| Title |
The relationship between reaction to sudden, intermittent movements and sounds and temperament |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
78 |
Issue |
6 |
Pages |
1467-1474 |
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N1 - |
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no |
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Equine Behaviour @ team @ |
Serial |
2945 |
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| Author |
Olesen, I.; Groen, A.F.; Gjerde, B. |
| Title |
Definition of animal breeding goals for sustainable production systems |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
78 |
Issue |
3 |
Pages |
570-582 |
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N1 - |
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no |
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Equine Behaviour @ team @ |
Serial |
2934 |
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| Author |
Sprigge, T.L.S. |
| Title |
Darwinian Dominion: Animal Welfare and Human Interests: Lewis Petrinovich, Cambridge, Mass, London, England, MIT Press, 1999, ix + 431 pages, {pound}31.50 (hc) |
Type |
Journal Article |
| Year |
2000 |
Publication |
J. Med. Ethics |
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26 |
Issue |
5 |
Pages |
412- |
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10.1136/jme.26.5.412 |
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no |
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Equine Behaviour @ team @ |
Serial |
2958 |
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| Author |
Bickerton, D. |
| Title |
Resolving Discontinuity: A Minimalist Distinction between Human and Non-human Minds |
Type |
Journal Article |
| Year |
2000 |
Publication |
Integr. Comp. Biol. |
Abbreviated Journal |
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| Volume |
40 |
Issue |
6 |
Pages |
862-873 |
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| Abstract |
Our genotype is so similar to those of the African apes, and our last common ancestor with them so recent, that it seems impossible that human and non-human cognition should differ qualitatively. But the outputs of human cognition are unique in their limitless creativity and adaptability. Exaption resolves the apparent paradox. Assume that the power to create symbols emerges from stimulus-stimulus linkages and is latent in many animals, and that the structural side of language emerges from the argument structures inherent in the social calculus associated with reciprocal altruism. These adaptations confer the potential for language. However, creating complex messages requires uniquely long-lasting coherence of neural signals, which depends in turn on the large quantities of neurons unique to Homo. The only difference between human and non-human minds is that we can sustain longer and more complex trains of thought. All else (emotions, rational processes, even consciousness) could be exactly the same. |
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10.1093/icb/40.6.862 |
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no |
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Equine Behaviour @ team @ |
Serial |
2966 |
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| Author |
Forkman, B. |
| Title |
Domestic hens have declarative representations |
Type |
Journal Article |
| Year |
2000 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
3 |
Issue |
3 |
Pages |
135-137 |
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| Abstract |
It is generally considered that information can be stored either as a procedural or as a declarative representation. A devaluation technique was used to determine whether hens have declarative representations. Individual hens (Gallus gallus domesticus) were fed in an enclosure with two containers, each with a new food type. One of the food types was devalued by pre-feeding with that food, after which the hens were tested with empty food containers. The pre-feeding should only affect the choice of the hens if they have learned where a particular food type was (declarative representation) rather than “go left when coming into the enclosure” (procedural representation). A significant proportion of the hens went to the location previously occupied by the non-devalued food (seven out of eight). This supports the hypothesis that domestic hens can form declarative representations. |
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no |
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Equine Behaviour @ team @ |
Serial |
3143 |
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| Author |
Xia, L.; Siemann, M.; Delius, J.D. |
| Title |
Matching of numerical symbols with number of responses by pigeons |
Type |
Journal Article |
| Year |
2000 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
3 |
Issue |
1 |
Pages |
35-43 |
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| Abstract |
Pigeons were trained to peck a certain number of times on a key that displayed one of several possible numerical symbols. The particular symbol displayed indicated the number of times that the key had to be pecked. The pigeons signalled the completion of the requirement by operating a separate key. They received a food reward for correct response sequences and time-out penalties for incorrect response sequences. In the first experiment nine pigeons learned to allocate 1, 2, 3 or 4 pecks to the corresponding numerosity symbols s1, s2, s3 and s4 with levels of accuracy well above chance. The second experiment explored the maximum set of numerosities that the pigeons were capable of handling concurrently. Six of the pigeons coped with an s1-s5 task and four pigeons even managed an s1-s6 task with performances that were significantly above chance. Analysis of response times suggested that the pigeons were mainly relying on a number-based rather than on a time-based strategy. |
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no |
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Equine Behaviour @ team @ |
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3163 |
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| Author |
Call, J.; Agnetta, B.; Tomasello, M. |
| Title |
Cues that chimpanzees do and do not use to find hidden objects |
Type |
Journal Article |
| Year |
2000 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
3 |
Issue |
1 |
Pages |
23-34 |
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Chimpanzees follow conspecific and human gaze direction reliably in some situations, but very few chimpanzees reliably use gaze direction or other communicative signals to locate hidden food in the object-choice task. Three studies aimed at exploring factors that affect chimpanzee performance in this task are reported. In the first study, vocalizations and other noises facilitated the performance of some chimpanzees (only a minority). In the second study, various behavioral cues were given in which a human experimenter either touched, approached, or actually lifted and looked under the container where the food was hidden. Each of these cues led to enhanced performance for only a very few individuals. In the third study – a replication with some methodological improvements of a previous experiment – chimpanzees were confronted with two experimenters giving conflicting cues about the location of the hidden food, with one of them (the knower) having witnessed the hiding process and the other (the guesser) not. In the crucial test in which a third experimenter did the hiding, no chimpanzee found the food at above chance levels. Overall, in all three studies, by far the best performers were two individuals who had been raised in infancy by humans. It thus seems that while chimpanzees are very good at “behavior reading” of various sorts, including gaze following, they do not understand the communicative intentions (informative intentions) behind the looking and gesturing of others – with the possible exception of enculturated chimpanzees, who still do not understand the differential significance of looking and gesturing done by people who have different knowledge about states of affairs in the world. |
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Equine Behaviour @ team @ |
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3176 |
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